Dish-washing machine



Patented Jan.

G. W. CONOVER.

DISH WASHING MACHINE.

APPLICATxoN FILED MAR.5.19|*9.

UNITED STATES PATENT OFFICE.

' GEORGE w. coNovEn, oiil CHICAGO, nmmors.

DISH-WASHING MACHINE.

Application filed March 5,

To all w hom it may concern Be it known that l, GEORGE lV. Coxowm, acitizen of the nited States, residing at Chicago, inthe county of Cookand State of Illinois, haveinvented a new and useful Improvement inDish-lashing Machines, of which the following is a specific-ation;y

This invention relates particularly to machines adapted to the purposeof washing dishes.

The primary object is to provide a machine of simple construction andmoderate cost, which' is thoroughly adapted to the purpose indicated.

The invention is illustrated in its preferred embodiment in theaccompanying' drawing, vin which- Figure 1 representsa brokenverticalsectional view of a dish-washing machine constructed inaccordance with the invent-ion; Fig. 2, a broken sectional view taken asindicated at line 2 of Fig. 1; and Fig. 3, a broken horizontal sectionalview taken as indicated at line 3 of Fig. 1.

Iii-the embodiment of the trated, A represents a can, or vessel, whichaffords a washing chamber, said vessel being provided with a removabletop A; B, a cast-iron spider upon which the vessel A is mounted, andwhich affords a reinforcement for the bottom of the vessel, and affords,also, bearings for various operating parts; B, a frame, or standards,upon which the spider B is rigidly mounted; C, a shaft journaled in thehub-portion of the spider B and having its upper portion projecting intothe-lower portion of the vessel A; D, a water-propelling device, orpaddle, demountably secured to the upper end of the shaft C; and E,actuating mechanism for the propeller shaft C.

The vessel A may be conveniently formed of sheet-metal, and preferablyhas its cylindrical vertical wall provided with vertical corrugations 1.which co-act with the propeller D to cause the water to be thrown insheets, or sprays, over and through the. dishes. which may be supportedin the vessel A by lany suitable means. as, for instance, by theopen-work tray, or basket, F. The vertical wall of the vessel ispreferablyv provided. also, with a lower inwardly-struck circumferentialbead 2, which is located some distance above the dislied bottom 3 of thevessel. Also, the vertical wall of the vessel is preferablyv providedwith inwardlyinvention illus- Specification of Letters Patent. PatentedJaIL 11, 1921.

1919.v seriai No. 286,119.

struck circumferential beads 4 and 5, which are spaced somedistanceapart and located some-distance above the reinforced upper edge 6 of thevertical wall.

l`he top, or cover, A', preferably cornprises an upwardlly dishedsheet-metal member provided centrally with a handle ,and equipped at itscircumference with a reinforcement 8 and a series of spring-arms, orsupports, 9, which are adapted to engage the lower bead 4 when the topis in the closed position, and are adapted to engage the bead 5 when thetop is lifted somewhat above the-'upper edge 6 of the vessel, so as toprovide a ventilating space between the cover and the vessel.

The spider B comprises a hub 10, radial arms 11, and a flat ring 12,carried by said radial arms. One of the arms 11 has a depressed bearing,or support, 13, which carries a vertical pivot for one of the members ofthe actuating mechanism E; -and at one point the ring 12 has formedintegrally therewith an upwardly-projecting lug, or support 14, whichserves to carry the pivot of the actuating lever of the mechanism E. Thehub 10 of the spider is provided with a perforation, through whichextends a. gland-like bearing 15 for the shaft C. The member 15 has itslower end equipped with a flange 15 which is secured, by cap-screws 16,to the hub 10, against the lower surface of which the flange 15a bears.The sleeve, or bearing, 15, `entends through the hub 10 and through acentral perforation in the bottom 3 of the vessel A, the upper end ofthe sleeve being externally threaded.

The upper end of the shaft C is journaled in a sleeve 17 which has anenlarged lower end, which is internally threaded and screwed on to theupper end of the sleeve 15, a washer, or gasket 18, being interposedbetween the lower end of the slee-ve 17 and the bottom 3 of the vesselA.

It will be understood that the perforate central portion of the bottom 3of the vessel A is clamped between the hub of the spider and the lowerend of the sleeve 17, a watertight joint being afforded. -The upper endof: the shaft C is fitted with a cap, or bearing,

19. which is rigidly secured to the/shaft and flange 19a which fitsfreely over the upper end of the sleeve 17. The upper end of the shaft Cis slightly reduced and fits into an' The propeller-blade, or paddle, D,is

'equipped at its inner end with an attaching arm, or bracket, 22, whichis fixedly secured to and depends from the bearing-cap 19, and which maybe integrally formed therewith, if desired. rI`hus, the blade D willrotate with the shaft C, to which the paddle-supporting cap 19 is firmlysecured.

The vertical corrugations 1 of the vessel A extend from the lower bead 2approximately to the lower one 4 of the top beads. Thus, the vessel iswell stiffened. The paddle D is disposed below the plane of the lowercircumferential bead 2.

lThe mechanism E comprises a hand-lever 23 supported on a horizontalpivot 24 carried by the supporting lug 14 of the spider, the hand-leverbeing equipped at its lower end with a gear-segment 23a; a lever 25journaled on a vertical pivot 26 carried by the supporting member 13 ofthe spider, the

outer end of the lever being equipped with a gear-segment 25a whichengages the gearsegment 28a, and the inner end of the lever beingequipped with a gear-segment 25"; and a pinion 27 secured on the shaft Cand meshing with the gear-segment 25h.

rIhe gear-segments 23'L and 25L are covered by a guard 28, which dependsfrom an extension of the stud 24 which forms the pivot for the lever 23.

In operation, the oscillation of the handlever 23 serves to oscillatethe lever 25, the motion being communicated through the pinion 27 to thevertical propeller shaft C. The movement of the propeller D tends tocreate a centrifugal flow of the water which is contained in the lowerportion of the vessel A, the water being forced upwardly over the lowercircumferential bead 2 and along the inner sides of the vessel. Theinternal circumferential bead 2 and the vertical corrugations of thevessel cause the water to be thrown in a spray over the dishes containedin the basket F, it being noted that the bottom 29 of the basket isdisposed slightly above the bead 2. the basket being provided with feet29a, which are supported upon the peripheral portion of the bottom ofthe vessel. Any suitable means for draining the vessel (not shown) maybe provided. Then the machine is not in use, the cover i' is left in theelevated position, with the spring-supports 9.engaging the upper bead 5,so that the vessel A will be thoroughly ventilated. It may be added thatwhen the machine is in use, the lower circumferential bead, 2, will aidin causing some of the water to break inwardly and strike the lowersides, or lower edge-portions, of the dishes.

The machine described is simple and cheap in construction, easilyoperated, readily kept in sanitary condition, and highly effective inoperation. The construction provides a water-tight connection betweenthe bearing for the propeller-shaft C and the bottom of the sheet-metalvessel, and also provides for a water-tight bearing for the shaft C, itbeing noted that, in practice, the normal water level of the water usedfor washing or rinsing purposes will be below the upper end of thebearing-sleeve 17.

The advantages noted above are important. contributing as they do to theproduction of a machine which can be sold at a pop ular price and usedin the household, as well as in restaurants. or the like, where dishesmust be washed in large numbers:

The foregoing detailed description has been given for clearness ofunderstanding only, and no unnecessary limitations should be understoodtherefrom, but the appended claims should be construed as broadly aspermissible in view of the prior art.

TWhat I regard as new, and desire to secure by Letters Patent. is:

1. In a dish-washing machine, the combination of a sheet-metal vesselhaving a bottom wall provided with a perforation, a spider supportingthe bottom of said vessel and having a perforate hub registering withthe perforation of said vessel, a bearing sleeve extending through saidperforations and having an elongated extension projecting a considerabledistance above said bottom, a liquid tight joint being provided betweensaid sleeve and the bottom of the vessel, a propeller shaft extendingthrough said bearing-sleeve and projecting beyond the upper end thereof.means connected with the lower end of said shaft for actuating the same,a bearing-member secured to the upper end of said shaft and engaging theextension of said bearing-sleeve, and a waterpropelling blade supportedby said lastnamed member.

2. In a. dish-.washing machine, the combi* nation of a sheet-metalvessel having a bottom wall provided with a perforation, a spidersupporting the bottom of said vessel and having a perforate hubregistering with the perforation of said vessel, a bearing sleeveextending through said perforations and having an elongated extensionprojecting a considerable distance above said bottom. a liquid tightjoint being provided between said sleeve and the bottom of the vessel, apropeller shaft extending through said hearing-sleeve and projectingbeyond the upper end thereof. means connected with the lower end of saidshaft for actuating the -having a threaded upper end,

same, a bearing-member secured to the upper end of Said shaft andengaging the extension of said bearing-sleeve, and a Waterpropellingblade projecting radially from the extension of said bearing-sleeve andhaving connections at its innery upper portion with said last-namedbearing-member.

3. In a dish-Washing machine, the combination of a sheetmetal vesselhaving a bottom provided with a perforation, a spider supporting saidvessel and having a hub provided with a perforatioma bearing-sleeveextending through said hub and through the perforation in the bottom ofsaid vessel and another bearing-sleeve having threaded connection withthe upper end of said first-named bearingsleeve and forming/an extensionof the bearing, the bottom 'of the vessel being clamped between saidmembers by means of the screw connections mentioned, a shaft extendingthrough said bearings1leeve and equipped at its upper end with albearing-member, a propeller-blade carried by said bearing-member,

4. In a dish-washing machine, .the combi! nation of a sheet-metal vesselhaving its bottom provided with a central perforation, a spidersupporting said vessel having a hub provided with a perforation, agland-like sleeve extending through said perforations and having at itslower end an external flange secured to said hub, the upper end of saidsleeve extending above the bottom of the vessel and having a threadthereon, an upper bearing-sleeve having an enlarged lower end providedwith a thread engaging said first-named thread, the loiver end of saidlast-named sleeve serving as a clamping means for the bottom of saidvessel, a shaft extending through Said sleeves and equipped at its upperend With a hearingrnember, a propeller carried by said bearing-member,and actuating means connected with the lower end of said shaft.

GEORGE WV. CONOVER.

